Setting up SSH keys on macOS with Touch ID nmattia.com

Nicolas Mattia explains how to create a non-extractable SSH identity in a Mac’s Secure Enclave and use Touch ID to authenticate, including for GitHub. His guide uses Apple’s `sc_auth` utility and SSH’s `ssh-keychain.dylib`, and describes the identity’s limits: it is tied to the Mac and must be recreated if the computer is lost or dies.